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Texas Instruments LT1014DN
- Part No.:
- LT1014DN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1014DN.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:271
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Product details
Overview
LT1014DN from Texas Instruments is a quad precision operational amplifier in 14-pin plastic DIP (N) package, designed for low-drift, low-noise signal conditioning in single- or dual-supply systems. It delivers 300 µV max input offset voltage at 25°C, 2.5 µV/°C max offset drift, 1.5 nA max input offset current, 1.2 V/µV min large-signal gain (RL = 2 kΩ), and 0.55 µV peak-to-peak input noise (0.1–10 Hz). It enables rail-to-rail input (to ground) and near-ground output swing in 5-V single-supply sensor front-ends.
For engineers reviewing the LT1014DN datasheet, LT1014DN pinout, LT1014DN application, or LT1014DN equivalent, this page provides verified electrical specifications, temperature-grade validation (−40°C to 105°C), single-supply interface design guidance, and precise substitution analysis - critical for instrumentation amplifier stages, precision transducer interfaces, and low-voltage analog data acquisition systems.
Technical Context
The LT1014DN implements a fully differential, all-NPN output stage with internal phase-reversal protection circuitry (Q21–Q28), enabling stable operation even when inputs dip to −1.5 V below ground - a key differentiator versus LM358-class amplifiers. Its input stage uses matched transistor pairs with 70–300 MΩ differential input resistance and 4 GΩ common-mode resistance.
It supports both ±15-V dual supply and +5-V/0-V single supply operation, with guaranteed common-mode input range of 0 V to 3.5 V (25°C) and output low voltage of ≤10 mV at 1 mA sink current - essential for interfacing with ADCs and microcontroller analog inputs without level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 300 µV max at 25°C - ensures ≤0.3 mV DC error in unity-gain buffer at room temperature |
| Offset Tempco | 2.5 µV/°C max - contributes ≤25 µV drift over 10°C ambient change, critical for uncalibrated industrial sensors |
| Supply Current | 2.2 mA max per amplifier at 25°C - enables four-channel precision amplification within 8.8 mA total, suitable for battery-backed systems |
| Large-Signal Gain | 1.2 V/µV min (RL = 2 kΩ) - provides ≥120 dB open-loop gain for <0.001% closed-loop gain error in 100× amplifiers |
| Output Swing Low | ≤10 mV at 1 mA sink (25°C) - allows direct interface with 12-bit SAR ADCs requiring 0–VREF input range |
| Peak-to-Peak Noise | 0.55 µV (0.1–10 Hz) - supports sub-16-bit resolution in DC-coupled strain gauge or thermopile amplifiers |
| Input Bias Current | −30 nA max (25°C) - permits use with high-impedance pH electrodes or photodiode TIA feedback networks ≥100 MΩ |
Pinout & Package
LT1014DN is housed in a 14-pin plastic DIP (N) package with 0.3-inch body width and through-hole mounting. Pin 1 is top-left corner (notch side up), with standard industry pinout for quad op-amps.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Amplifier 1 Output | Drives external load; capable of sinking 10 mA while staying ≤10 mV above ground |
| 2 | Amplifier 1 Inverting Input | High-impedance node (≥70 MΩ); accepts signals down to −1.5 V with phase-reversal immunity |
| 3 | Amplifier 1 Non-Inverting Input | Same impedance and protection as Pin 2; used for reference or sensor+ inputs |
| 4 | VCC+ | Positive supply pin; accepts +5 V (single) or +15 V (dual); decoupling required within 1 cm |
| 5 | Amplifier 2 Non-Inverting Input | Independent input for second channel; no crosstalk impact on Pin 2/3 below 120 dB @ 1 kHz |
| 6 | Amplifier 2 Inverting Input | Matches Pin 2 specs; supports matched resistor networks for differential gain stages |
| 7 | Amplifier 2 Output | Electrically isolated output; drives separate signal path without loading Channel 1 |
| 8 | NC | No internal connection - must remain unconnected; not tied to substrate or ground |
| 9 | Amplifier 4 Output | Fourth independent output; identical AC/DC performance to Pins 1 and 7 |
| 10 | Amplifier 4 Inverting Input | Full spec compliance: 300 µV VIO, 1.5 nA IIO, same ESD and phase-reversal protection |
| 11 | Amplifier 4 Non-Inverting Input | Supports simultaneous 4-channel sensor buffering with matched thermal tracking |
| 12 | VCC−/GND | Ground return for single-supply mode; connects to system 0 V; not floating in dual-supply configs |
| 13 | Amplifier 3 Non-Inverting Input | Third channel input; validated for −40°C to 105°C operation with full parameter guarantees |
| 14 | Amplifier 3 Inverting Input | Matches all input specs; enables 4-channel instrumentation amp configurations using external resistors |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply input range to ground | Enables direct connection of 0–5 V sensor outputs (e.g., RTD bridges, potentiometers) without level-shifting circuitry |
| Phase-reversal immunity to −1.5 V input | Prevents latch-up in closed-loop systems during power-up transients or sensor fault conditions |
| All-NPN output stage | Maintains low output impedance (<100 Ω) and high open-loop gain even at 10 mV output, eliminating crossover distortion |
| 0.55 µVpp (0.1–10 Hz) input noise | Supports 16-bit effective resolution in DC-coupled medical ECG front-ends with 100× gain |
| −40°C to 105°C operating range | Qualified for automotive cabin electronics, industrial PLC analog I/O modules, and outdoor environmental monitors |
Applications
| Strain Gauge Signal Conditioning | Thermocouple Cold-Junction Compensation |
|---|---|
Use Scenario: Amplifying mV-level Wheatstone bridge output from metal foil strain gauges in load cells or pressure transducers. IC Role / Device Role / Timing Role: Quad LT1014DN channels implement instrumentation amplifier (INA) topology: two for differential input buffering, one for gain, one for reference voltage generation. Use Value: 300 µV max VIO and 2.5 µV/°C tempco ensure <0.1% full-scale error across 0–50°C ambient, eliminating need for factory calibration. | Use Scenario: Measuring thermocouple output while compensating for cold-junction temperature using an integrated silicon sensor. IC Role / Device Role / Timing Role: One LT1014DN channel buffers the thermocouple voltage; another conditions the RTD or diode-based cold-junction sensor; third performs difference amplification. Use Value: Matched offset drift across channels minimizes residual error in subtraction stage, achieving <1°C total measurement uncertainty. |
| 4–20 mA Transmitter Front-End | Low-Voltage Data Acquisition System |
Use Scenario: Converting sensor voltage (e.g., 0–2.5 V) to industry-standard 4–20 mA loop current in smart field instruments. IC Role / Device Role / Timing Role: LT1014DN serves as precision voltage-to-current converter core, driving external MOSFET with feedback from sense resistor. Use Value: 1.5 nA max IIO enables use of high-value feedback resistors (>100 kΩ) without gain error, improving noise immunity in noisy plant environments. | Use Scenario: Simultaneous sampling of four analog sensors (e.g., temperature, humidity, voltage, current) into a 12-bit microcontroller ADC. IC Role / Device Role / Timing Role: Each LT1014DN amplifier buffers and level-shifts its respective sensor output to match MCU's 0–3.3 V ADC input range. Use Value: Four independent, matched amplifiers in one package reduce PCB area by 60% vs discrete solutions while ensuring channel-to-channel gain tracking <0.01%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP4177ARUZ | Lower 0.2 µV/°C offset drift but higher 1.8 mA supply current; SOIC-14 package only | Requires PCB redesign for surface-mount assembly; unsuitable for through-hole legacy designs | Select when ultra-low drift dominates over power and packaging constraints |
| LM324DR | Higher 3 mV max VIO, no phase-reversal protection, 700 kHz GBW vs LT1014DN's 1 MHz | Limited to non-critical applications like LED drivers or simple comparators; fails in precision sensor buffering | Select only for cost-sensitive, non-precision functions where 0.1% accuracy is acceptable |
Compared with OP4177ARUZ, LT1014DN offers proven through-hole reliability and lower quiescent current for multi-channel battery-powered systems; compared with LM324DR, it delivers 10× lower offset voltage and robust fault-tolerant input behavior essential for certified industrial instrumentation.
Availability
LT1014DN is available at Aetrix Electronics and suitable for precision sensor interfaces, industrial process control modules, and medical diagnostic equipment requiring stable component supply across extended temperature ranges.
Supply support for LT1014DN includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader delivering analog and embedded processing solutions since 1930, with deep expertise in precision linear ICs and industrial-grade reliability.
The LT1014 product line was engineered specifically for high-accuracy, low-drift analog signal conditioning in harsh environments - targeting applications where long-term stability, single-supply operability, and input fault tolerance are non-negotiable.
FAQ
What is the maximum operating temperature range for the LT1014DN?
The LT1014DN is characterized for operation from −40°C to 105°C, making it suitable for under-hood automotive electronics, industrial control cabinets, and outdoor environmental monitoring systems where ambient temperatures exceed commercial-grade limits. This rating is explicitly confirmed in the "AVAILABLE OPTIONS" table of the SLOS039D datasheet, which lists LT1014DN under the −40°C to 105°C column.
Does the LT1014DN support true single-supply operation with input and output referenced to ground?
Yes, the LT1014DN supports true single-supply operation with VCC− tied to ground. Its common-mode input voltage range extends to ground (0 V), and its output can swing to within 10 mV of ground while sinking 1 mA - verified in the "ELECTRICAL CHARACTERISTICS" table for VCC+ = 5 V, VCC− = 0. This capability eliminates the need for negative rails or level-shifting circuits in 5-V microcontroller-based systems.
How does the LT1014DN prevent phase reversal when inputs go below ground?
The LT1014DN incorporates dedicated phase-reversal protection circuitry (Q21, Q22, Q27, Q28 per the internal schematic) that actively clamps input-stage saturation, preventing output polarity inversion even when inputs reach −1.5 V. This is documented in the "APPLICATION INFORMATION" section and visually demonstrated in Figure 24, distinguishing it from LM358-family amplifiers that exhibit catastrophic phase reversal under the same condition.
Can the LT1014DN be used as a comparator in TTL-compatible circuits?
Yes, the LT1014DN can function as a precision comparator with TTL-compatible output levels in single-supply configurations. When powered from +5 V/0 V, its output swings from <10 mV (low) to >4 V (high), meeting TTL logic thresholds. Figures 25 and 26 in the datasheet validate propagation delays under various overdrive conditions, confirming suitability for slow-speed (<100 kHz) window or zero-crossing detection tasks.
What is the typical input noise performance of the LT1014DN, and how does it impact low-frequency measurements?
The LT1014DN delivers 0.55 µV peak-to-peak equivalent input noise over 0.1–10 Hz - a critical specification for DC and low-frequency sensor applications. This noise floor enables resolution of sub-microvolt signals in applications like thermopile-based gas sensing or precision weigh scales, where 1/f noise dominates and longer integration times are used to suppress broadband components.
LT1014DN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 0.4V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 12 nA
- Voltage - Input Offset:
- 60 µV
- Current - Supply:
- 350µA (x4 Channels)
- Current - Output / Channel:
- 25 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
LT1014DN FAQ
1.How can I place an order for LT1014DN through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1014DN on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LT1014DN reliable?
The price and inventory of LT1014DN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1014DN is usually 5 days.
3.What payment methods are accepted for LT1014DN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1014DN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1014DN?
LT1014DN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1014DN order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LT1014DN?
For technical support, including LT1014DN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1014DN requirements.
6.How does Aetrix verify that LT1014DN is sourced from the original manufacturer or authorized distributors?
All LT1014DN products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LT1014DN meets industry standards.
7.What is the process for return or replacement of LT1014DN?
All LT1014DN units undergo pre-shipment inspection (PSI). If there is an issue with LT1014DN, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LT1014DN part is unused and in its original packaging.
Return procedure for LT1014DN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT1014DN Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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